103 resultados para Online voltage regulation
Resumo:
This paper presents and compares two approaches to estimate the origin (upstream or downstream) of voltage sag registered in distribution substations. The first approach is based on the application of a single rule dealing with features extracted from the impedances during the fault whereas the second method exploit the variability of waveforms from an statistical point of view. Both approaches have been tested with voltage sags registered in distribution substations and advantages, drawbacks and comparative results are presented
Resumo:
This paper aims to survey the techniques and methods described in literature to analyse and characterise voltage sags and the corresponding objectives of these works. The study has been performed from a data mining point of view
Resumo:
Three multivariate statistical tools (principal component analysis, factor analysis, analysis discriminant) have been tested to characterize and model the sags registered in distribution substations. Those models use several features to represent the magnitude, duration and unbalanced grade of sags. They have been obtained from voltage and current waveforms. The techniques are tested and compared using 69 registers of sags. The advantages and drawbacks of each technique are listed
Resumo:
Aquest projecte se centrarà en l'anàlisi i millora dels processos online i l'eliminació de les barreres d'accessibilitat i usabilitat del site d'una entitat financera. Per al compliment d'aquest objectiu ens fixarem en el formulari de contractació d'una hipoteca.
Resumo:
Chronic pain is a relevant problem in our society. Concerning the young population, recurring abdominal pain (RAP in English, DAR in Spanish and Catalan) is very common among children and adolescents. DARWeb is an online treatment program addressed to children and teenagers with DAR and their parents. This work is aimed to develop an intervention to improve the communication skills of the children/adolescents with DAR and their parents. It is also proposed how this could be implemented to DARWeb.
Resumo:
Aquest treball posa en pràctica l'adaptació d'una enquesta anomenada E-S-QUAL, que avalua la qualitat del servei en establiments virtuals. Es parteix de la tesi del doctor Cristóbal i es combina amb part de la tesi del doctor Granollers, concretament amb el model MPIU+Q. S'ha implementat un lloc web amb l'enquesta, ens hem posat en contacte amb un supermercat virtual (Plusfresh.com)i l'hem posada en maxa per a que els clients la contestessin. Finalment, s'ha fet una anàlisi de les dades recollides i s'han extret uns informes i conclusions.
Resumo:
Este proyecto surge de la necesidad de mejorar un CardStoring ya existente de forma que, mediante un servidor, podamos usarlo de forma remota, y poder separar la aplicación en dos partes; ya que hasta el momento se encontraba en una sola. Con esto se consigue que la creación de las tarjetas pase desapercibida para el usuario y que a éste le resulte más simple el uso de esta aplicación. Con esto, se lograría que la aplicación pueda ser distribuida de forma Web. También será modificado el tipo de tarjetas para poder introducir sonidos, videos e imágenes. Con lo cual conseguimos adaptar el proyecto a personas discapacitadas como pueden ser sordos e invidentes además de aportar un uso más amplio a cada una de las tarjetas.
Resumo:
Creació d'una botiga en línia per a la venda de rellotges a través d'Internet sobre la plataforma de comerç electrònic PrestaShop.
Resumo:
Gestor de contrasenyes online segur en aplicació web en Java que funciona en un servidor Apache Tomcat 7.
Resumo:
Through the history of Electrical Engineering education, vectorial and phasorial diagrams have been used as a fundamental learning tool. At present, computational power has replaced them by long data lists, the result of solving equation systems by means of numerical methods. In this sense, diagrams have been shifted to an academic background and although theoretically explained, they are not used in a practical way within specific examples. This fact may be against the understanding of the complex behavior of the electrical power systems by students. This article proposes a modification of the classical Perrine-Baum diagram construction to allowing both a more practical representation and a better understanding of the behavior of a high-voltage electric line under different levels of load. This modification allows, at the same time, the forecast of the obsolescence of this behavior and line’s loading capacity. Complementary, we evaluate the impact of this tool in the learning process showing comparative undergraduate results during three academic years
Resumo:
Aquest projecte consisteix en modificar la web de la botiga virtual www.grandeszapatos.com per tal d'implementar un sistema per a la fidelització dels clients a la botiga, basat en un sistema de punts (convertibles en descomptes) que s'aconseguiran per a la realització de compres, apadrinament de nous clients, escriptura de comentaris dels clients, aniversari o promocions genèriques. El nou sistema afecta tant a la part del front-office (visible pels clients) com a la part del back-office (administració per part dels membres de la botiga).
Resumo:
Removal of introns during pre-mRNA splicing is a critical process in gene expression, and understanding its control at both single-gene and genomic levels is one of the great challenges in Biology. Splicing takes place in a dynamic, large ribonucleoprotein complex known as the spliceosome. Combining Genetics and Biochemistry, Saccharomyces cerevisiae provides insights into its mechanisms, including its regulation by RNA-protein interactions. Recent genome-wide analyses indicate that regulated splicing is broad and biologically relevant even in organisms with a relatively simple intronic structure, such as yeast. Furthermore, the possibility of coordination in splicing regulation at genomic level is becoming clear in this model organism. This should provide a valuable system to approach the complex problem of the role of regulated splicing in genomic expression.